/*
* Copyright (C) 2022 Huawei Device Co., Ltd.
* Licensed under the BSD License, (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     https://opensource.org/licenses/BSD-3-Clause
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import {FeatureMatcher} from '../FeatureMatcher';
import {Matcher} from '../Matcher';
import {IsEqual} from '../core/IsEqual';

export class CharSequenceLength extends FeatureMatcher<String, Number> {
  public constructor(lengthMatcher: Matcher<Number>) {
    super(lengthMatcher, "a CharSequence with length", "length");
  }

  protected featureValueOf(actual: String): Number {
    return actual.length;
  }

  /**
     * Creates a matcher of {@link CharSequence} that matches when a char sequence has the given length
     * For example:
     *
     * <pre>
     * assertThat("text", hasLength(4))
     * </pre>
     *
     * @param length the expected length of the string
     * @return The matcher.
     */
  public static hasLength(length: number): Matcher<String> {
    return new CharSequenceLength(IsEqual.equalTo(length));
  }

  /**
      * Creates a matcher of {@link CharSequence} that matches when a char sequence has the given length
      * For example:
      *
      * <pre>
      * assertThat("text", hasLength(lessThan(4)))
      * </pre>
      *
      * @param lengthMatcher the expected length of the string
      * @return The matcher.
      */
  public static hasLengthMatcher(lengthMatcher: Matcher<String>): Matcher<String> {
    return new CharSequenceLength(lengthMatcher);
  }
}
